java - 重写 Spring + Hibernate 事务性注解

Question

我有这个 DAO:

@Transactional("transactionManager")
public class DAO{
     public void save(String a){...}
}

我有这门课:

public class test{
...
@Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRES_NEW)
    public void save(){
        DAO.save("a");
        DAO.save("b");
       }
    }

我希望“save”方法在抛出异常时回滚，但是当异常发生时它似乎不起作用它不会回滚，正确的方法是什么？ DAO 中的所有其他方法都是事务性的。有没有办法可以覆盖覆盖的事务设置？

编辑:我已经更新了，抛出异常的时候还是不行:

public class test{
...

    public void save(){
        Service.test(a,b);
       }
    }

    public class Service{
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRES_NEW)
        public void testSave(object a, object b){
            dao.updateEntry(a);
            dao.updateEntry(b);

        }
    }

Answer 1

从 Dao 层删除 Transactional 注释并放置 Transactional annotation in your service layer 。看看我的代码:-

@Transactional
@Service
public class Service {

    @Autowired
    private Dao1 dao1;

    @Autowired
    private Dao2 dao2;

    public Dao1 getDao1() {
        return dao1;
    }

    public void setDao1(Dao1 dao1) {
        this.dao1 = dao1;
    }

    public Dao2 getDao2() {
        return dao2;
    }

    public void setDao2(Dao2 dao2) {
        this.dao2 = dao2;
    }

    public void insertData(){
        dao1.insert1();
        dao2.insert2();
    }

在上面的代码中，如果 dao2.insert2() 失败，则 dao1.insert1() 将回滚。

如果服务类中有多个具有不同事务属性的方法:
您可以使用以下规则在公共(public)方法上定义 @Transactional 注释:-

When using proxies, you should apply the @Transactional annotation only to methods with public visibility. If you do annotate protected, private or package-visible methods with the @Transactional annotation, no error is raised, but the annotated method does not exhibit the configured transactional settings.

链接1:Transactional annotation on whole class + excluding a single method

Transaction support configuration setup:-

1) spring-config.xml

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
     http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">

      <context:component-scan base-package="com.concept" />
     <tx:annotation-driven transaction-manager="txManager"/>

      <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
      </bean>

     <bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
        <property name="url" value="" />
        <property name="username" value="" />
        <property name="password" value="" />
    </bean> 
</beans>